Appendix 3. Crop fertilization and nutrient management practices

Fertility management is particularly important in the quality and maturity of horticultural crops. For example, in vegetables, soil tests were conducted on at least 24% of the acreage and dry fertilizer was broadcast and incorporated on 92% of acres. Manure was used on 1% of the crops, mostly from beef feedlots, at the rate of 7 tons per acre. Fertilization practices are summarized below, with some comparisons with soil test recommendations from the Texas Cooperative Extension (TCE).

Table 23.  Fertilization of horticultural crops in Texas (based on NASS survey data in 1992 and 1999).

Crops

Average No.

Applications

Nitrogen

 

Phosphorous

% of acres

lbs. applied/A

 

% of acres

lbs. applied/A

Vegetable crops

Broccoli

1.1 to 1.9

100

80 to 150

 

85

95 to 140

Cabbage

1.1 to 2.1

98

90 to 130

 

90

100 to 115

Carrots

1.1 to 2.1

98

90 to 130

 

85

90 to 175

Corn - sweet

   TCE recommended

1.1 to 2.4

99

120 to 140

120

 

86

40 to 60

85

Cucumber

  TCE recommended

1.4 to 1.6

96

80 to 170

80

 

90

60 to 100

85

Onions

   TCE recommended

1.7

100

90 to 200

100

 

80

80 to 100

105

Peppers - bell

   TCE recommended

1.6

98

80 to 160

120

 

75

85 to 110

85

Spinach

1.0

96

110 to 170

 

90

90 to 160

Watermelons

2.2

97

65 to 90

 

94

50 to 70

Tree crops

Grapefruit

1.1

99

100 to 120

 

26

30 to 40

Peaches

1.4

74

80 to 100

 

60

70 to 80

Pecans (improved)

1.7

46

120 to 160

 

23

40 to 60


Texas Crops Index | Extension Horticulture Index | Aggie Horticulture